DynamicTablesPkg: Adds X64 support for CPU SSDT generator

Introduce support for generating ACPI CPU SSDT table
for the X64 architecture.

Creates processor objects based on configuration data.

Cc: Sami Mujawar <Sami.Mujawar@arm.com>
Cc: Pierre Gondois <pierre.gondois@arm.com>
Signed-off-by: Abdul Lateef Attar <AbdulLateef.Attar@amd.com>

DynamicTablesPkg/DynamicTables.dsc.inc

@@ -74,8 +74,12 @@
       #   X64 specific
       NULL|DynamicTablesPkg/Library/Acpi/X64/AcpiHpetLib/AcpiHpetLib.inf
       NULL|DynamicTablesPkg/Library/Acpi/X64/AcpiMadtLib/AcpiMadtLib.inf
-      NULL|DynamicTablesPkg/Library/Acpi/X64/AcpiSsdtHpetLib/AcpiSsdtHpetLib.inf
       NULL|DynamicTablesPkg/Library/Acpi/X64/AcpiWsmtLib/AcpiWsmtLib.inf
+      # AML Codegen
+      #  Common
+      NULL|DynamicTablesPkg/Library/Acpi/Common/AcpiSsdtCpuTopologyLib/SsdtCpuTopologyLib.inf
+      #  X64 specific
+      NULL|DynamicTablesPkg/Library/Acpi/X64/AcpiSsdtHpetLib/AcpiSsdtHpetLib.inf
   }
 
 [Components.ARM, Components.AARCH64]

DynamicTablesPkg/Library/Acpi/Common/AcpiSsdtCpuTopologyLib/SsdtCpuTopologyLib.inf

@@ -23,6 +23,9 @@
 [Sources.ARM, Sources.AARCH64]
   Arm/ArmSsdtCpuTopologyGenerator.c
 
+[Sources.IA32, Sources.X64]
+  X64/X64SsdtCpuTopologyGenerator.c
+
 [Packages.ARM, Packages.AARCH64]
   ArmPlatformPkg/ArmPlatformPkg.dec
 

DynamicTablesPkg/Library/Acpi/Common/AcpiSsdtCpuTopologyLib/X64/X64SsdtCpuTopologyGenerator.c

@@ -0,0 +1,144 @@
+/** @file
+  X64 SSDT Cpu Topology Table Generator Helpers.
+
+  Copyright (C) 2024 Advanced Micro Devices, Inc. All rights reserved.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+  @par Reference(s):
+    - ACPI 6.3 Specification - January 2019 - s8.4 Declaring Processors
+**/
+
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+
+// Module specific include files.
+#include <AcpiTableGenerator.h>
+#include <ConfigurationManagerObject.h>
+#include <ConfigurationManagerHelper.h>
+#include <Library/TableHelperLib.h>
+#include <Library/AmlLib/AmlLib.h>
+#include <Protocol/ConfigurationManagerProtocol.h>
+
+#include "SsdtCpuTopologyGenerator.h"
+
+/** This macro expands to a function that retrieves the
+    Local APIC or X2APIC information from the Configuration Manager.
+*/
+GET_OBJECT_LIST (
+  EObjNameSpaceX64,
+  EX64ObjLocalApicX2ApicInfo,
+  CM_X64_LOCAL_APIC_X2APIC_INFO
+  );
+
+/**
+  Create the processor hierarchy AML tree from arch specific CM objects.
+
+  @param [in] Generator        The SSDT Cpu Topology generator.
+  @param [in] CfgMgrProtocol   Pointer to the Configuration Manager
+                               Protocol Interface.
+  @param [in] ScopeNode        Scope node handle ('\_SB' scope).
+
+  @retval EFI_UNSUPPORTED      Not supported
+**/
+EFI_STATUS
+EFIAPI
+CreateTopologyFromIntC (
+  IN        ACPI_CPU_TOPOLOGY_GENERATOR                   *Generator,
+  IN  CONST EDKII_CONFIGURATION_MANAGER_PROTOCOL  *CONST  CfgMgrProtocol,
+  IN        AML_OBJECT_NODE_HANDLE                        ScopeNode
+  )
+{
+  EFI_STATUS                     Status;
+  CM_X64_LOCAL_APIC_X2APIC_INFO  *LocalApicX2ApicInfo;
+  UINT32                         LocalApicX2ApicCount;
+  UINT32                         Index;
+  AML_OBJECT_NODE_HANDLE         CpuNode;
+
+  ASSERT (Generator != NULL);
+  ASSERT (CfgMgrProtocol != NULL);
+  ASSERT (ScopeNode != NULL);
+
+  LocalApicX2ApicCount = 0;
+  Status               = GetEX64ObjLocalApicX2ApicInfo (
+                           CfgMgrProtocol,
+                           CM_NULL_TOKEN,
+                           &LocalApicX2ApicInfo,
+                           &LocalApicX2ApicCount
+                           );
+  if (EFI_ERROR (Status)) {
+    ASSERT_EFI_ERROR (Status);
+    return Status;
+  }
+
+  /// for each processor object, create an AML node.
+  for (Index = 0; Index < LocalApicX2ApicCount; Index++) {
+    Status = CreateAmlCpu (
+               Generator,
+               ScopeNode,
+               LocalApicX2ApicInfo[Index].AcpiProcessorUid,
+               Index,
+               &CpuNode
+               );
+    if (EFI_ERROR (Status)) {
+      ASSERT_EFI_ERROR (Status);
+      break;
+    }
+  }
+
+  return Status;
+}
+
+/** Add arch specific information to a CPU node in the asl description.
+
+  @param [in]  Generator          The SSDT Cpu Topology generator.
+  @param [in]  CfgMgrProtocol     Pointer to the Configuration Manager
+                                  Protocol Interface.
+  @param [in]  AcpiIdObjectToken  AcpiIdObjectToken identifying the CPU to fetch the
+                                  other fields from.
+  @param [in]  CpuName            Value used to generate the CPU node name.
+  @param [out] CpuNode            CPU Node to which the ET device node is
+                                  attached.
+
+  @retval EFI_UNSUPPORTED         Not supported
+**/
+EFI_STATUS
+EFIAPI
+AddArchAmlCpuInfo (
+  IN  ACPI_CPU_TOPOLOGY_GENERATOR                         *Generator,
+  IN  CONST EDKII_CONFIGURATION_MANAGER_PROTOCOL  *CONST  CfgMgrProtocol,
+  IN  CM_OBJECT_TOKEN                                     AcpiIdObjectToken,
+  IN  UINT32                                              CpuName,
+  OUT  AML_OBJECT_NODE_HANDLE                             *CpuNode
+  )
+{
+  return EFI_UNSUPPORTED;
+}
+
+/** Get generic interrupt information from arch specific CM objects.
+
+  @param [in]  CfgMgrProtocol     Pointer to the Configuration Manager
+                                  Protocol Interface.
+  @param [in]  AcpiIdObjectToken  AcpiIdObjectToken identifying the CPU to fetch the
+                                  other fields from.
+  @param [out] AcpiProcessorUid   AcpiProcessorUid of the CPU identified by
+                                  the AcpiIdObjectToken.
+  @param [out] CpcToken           CpcToken of the CPU identified by
+                                  the AcpiIdObjectToken.
+  @param [out] PsdToken           PsdToken of the CPU identified by
+                                  the AcpiIdObjectToken.
+
+  @retval EFI_UNSUPPORTED         Not supported
+**/
+EFI_STATUS
+EFIAPI
+GetIntCInfo (
+  IN  CONST EDKII_CONFIGURATION_MANAGER_PROTOCOL  *CONST  CfgMgrProtocol,
+  IN  CM_OBJECT_TOKEN                                     AcpiIdObjectToken,
+  OUT UINT32                                              *AcpiProcessorUid,
+  OUT CM_OBJECT_TOKEN                                     *CpcToken,
+  OUT CM_OBJECT_TOKEN                                     *PsdToken
+  )
+{
+  return EFI_UNSUPPORTED;
+}